Index Catalog // ScholarsArchive@OSU

Spatially explicit inter-temporal forest management decision under the risk of fire

Creator:: Konoshima, Masashi
Abstract:: This paper presents a framework for analyzing efficient spatial allocation of forest management efforts - fuel treatment and harvest - under the risk of fire. The framework integrates a fire behavior model and a spatially-explicit stochastic dynamic optimization model. I investigate the effects of spatial interaction across plots during forest...
Resource Type:: Dissertation
Full Text:: fire simulation model and an optimiza- tion model to examine the optimal forest management strategy

A stochastic analysis of erosion and economic impacts associated with timber harvests and forest roads

Creator:: McNutt, James Allen
Abstract:: A complex and sometimes serious problem facing modern day forest managers is that of estimating and analyzing potential on-site impacts which result from forest activities. A major type of adverse impact is man-Initiated forest erosion. This consequence can be substantially magnified when forest harvest and road activities are implemented in...
Resource Type:: Dissertation

Resource limited competition of two species : a dynamic model of a perturbed neutrally stable system

Creator:: Peterson, Bruce Alan, 1947-
Abstract:: An hierarchically structured resource flow competition model for two species is developed. The model is shown to be intrinsically neutrally stable with a dynamical behavior derived from perturbation responses. The model properties are contrasted with those of a conventionally interpreted Lotka-Volterra competition model. A simulation developed from the model is...
Resource Type:: Dissertation
Full Text:: terms of a series approximation to a more complex model. This mathematical approach has been used

Hierarchical analysis of spatial pattern and processes of Douglas-fir forests using wavelet analysis

Creator:: Bradshaw, G. A.
Abstract:: There has been an increased interest in the quantification of pattern in ecological systems over the past years. This interest is motivated by the desire to construct valid models which extend across many scales. Spatial methods must quantify pattern, discriminate types of pattern, and relate hierarchical phenomena across scales. Wavelet...
Resource Type:: Dissertation

A comparison of prediction models for cover type transitions and their effects on harvest schedules in coastal Oregon

Creator:: Eng, Helge
Abstract:: There is considerable uncertainty associated with stand establishment in coastal Oregon. Several species can gain control of the site depending on stand conditions as well as management practices. In this study, three cover type transition models were developed using data from the Siuslaw National Forest to predict stand establishment patterns...
Resource Type:: Dissertation

The use of logistic regression for developing habitat association models

Creator:: Sjamsoe'oed, Roza
Abstract:: Quantitative habitat models of wildlife-habitat relationships are developed to formalize our current understanding about an ecological system. A habitat association model is one of these models that is useful for answering questions about how the habitat is occupied, how much growth habitat is required by the animal, or how the...
Resource Type:: Dissertation
Full Text:: habitat association model is one of these models that is useful for answering questions about how the

Hydrology and thermomechanics of liquid-dominated hydrothermal systems in Iceland

Creator:: Axelsson, Gudni
Abstract:: Low-temperature hydrothermal activity in Iceland is apparently mostly controlled by dikes and fractures. Conventional methods of production data analysis are not readily applicable in cases of heterogeneous/anisotropic fracture dominated hydrothermal systems. Moreover, the dikes and fractures may control the heat uptake mechanism of low-temperature activity. The free-surface response functions of...
Resource Type:: Dissertation
Full Text:: . Based on a homogeneous and isotropic half- space model apparent permeability estimates of 0.7

Optimizing the primary forest products supply chain : a multi-objective heuristic approach

Creator:: Hamann, Jeff D.
Abstract:: This thesis is a collection of four submitted manuscripts that present methods to assist forest ecosystem service managers wanting to develop operational sampling, monitoring, and production plans for a set of specific quantifiable ecosystem services, which are formulated as a series of general multi-objective optimization problems. The problems are solved...
Resource Type:: Dissertation
Full Text:: . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 3. AN EXAMINATION OF DESIGN-BASED AND MODEL-BASED SAMPLING FOR PRIMARY FOREST PRODUCTS SUPPLY

A coupled hydrologic-geomorphic model for evaluating effects of vegetation change on watersheds

Creator:: Duan, Jinfan
Abstract:: This work describes the modeling framework and initial results for CLAWS (Coupled Landscape And Water System), a physically-based, spatially-distributed hydrologicgeomorphic model that has been coupled with a vegetation dynamics simulation. Spatial variability of topography, soil, vegetation, and climate drive a hydrology module that calculates the water budget at given time...
Resource Type:: Dissertation

Economic analysis of integrating spatial concerns into harvest scheduling

Creator:: Yoshimoto, Atsushi
Abstract:: An analytical algorithm to formulate a sparser set of adjacency constraints than the conventional algorithm is proposed. Utilizing matrix algebra applied to an adjacency matrix, constraints are systematically and efficiently derived by the proposed algorithm. The proposed algorithm is proved to provide a true set of adjacency constraints in the...
Resource Type:: Dissertation

ScholarsArchive@OSU

Spatially explicit inter-temporal forest management decision under the risk of fire

A stochastic analysis of erosion and economic impacts associated with timber harvests and forest roads

Resource limited competition of two species : a dynamic model of a perturbed neutrally stable system

Hierarchical analysis of spatial pattern and processes of Douglas-fir forests using wavelet analysis

A comparison of prediction models for cover type transitions and their effects on harvest schedules in coastal Oregon

The use of logistic regression for developing habitat association models

Hydrology and thermomechanics of liquid-dominated hydrothermal systems in Iceland

Optimizing the primary forest products supply chain : a multi-objective heuristic approach

A coupled hydrologic-geomorphic model for evaluating effects of vegetation change on watersheds

Economic analysis of integrating spatial concerns into harvest scheduling

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